JP7088294B2 - Power conversion system, IP address transmission method of power conversion device, and program - Google Patents

Description

The present invention relates to a power conversion system, an IP address transmission method of a power conversion device, and a program.

Patent Document 1 describes a system in which each of a plurality of power conversion devices belonging to the same group and connected to each other so as to be communicable with each other is assigned to a master and a slave. In this system, after the initial processing such as acquisition of the IP address is executed, the power conversion device that plays the role of the master and the power conversion device that plays the role of the slave communicate with each other.

Japanese Unexamined Patent Publication No. 2017-127190

The problem to be solved by the present invention is, for example, to enable communication between a plurality of power conversion devices belonging to the same group and connected to each other so as to be communicable with each other and a higher-level device cooperating with the plurality of power conversion devices. It is to be.

The power conversion system according to one aspect of the present invention acquires the IP addresses of a plurality of power conversion devices belonging to the same group and connected to each other so as to be communicable with each other, and the IP addresses of the plurality of power conversion devices, and IPs. It has a list generation unit that generates an address list, a list storage unit that stores the IP address list, and a list transmission unit that transmits the IP address list to a higher-level device that cooperates with the plurality of power conversion devices.

Further, the IP address transmission method of the power conversion device according to one aspect of the present invention acquires the IP address of each of a plurality of power conversion devices that belong to the same group and are communicably connected to each other, and is an IP address list. Is generated, the IP address list is recorded in the storage unit, and the IP address list is transmitted to a higher-level device that cooperates with the plurality of power conversion devices.

Further, the program according to one aspect of the present invention is a list generation unit that acquires the IP addresses of each of a plurality of power conversion devices that belong to the same group and are connected to each other so as to be communicable with each other and generate an IP address list. The computer functions as a list transmission unit that transmits the IP address list to a higher-level device that cooperates with the plurality of power conversion devices.

Further, in the power conversion system according to one aspect of the present invention, any of the plurality of power conversion devices is directly connected to the higher-level device, and at least the power conversion device directly connected to the higher-level device is a power conversion device. It has the list transmission unit and transmits the IP address list to the higher-level device.

Further, in the power conversion system according to one aspect of the present invention, the higher-level device transmits a request for acquiring the IP address list when a predetermined operation is performed, and the power conversion system is said to be said from the higher-level device. Further having a receiving unit for receiving the acquisition request, the list transmitting unit transmits the IP address list to the higher-level device when the acquisition request is received from the higher-level device.

Further, in the power conversion system according to one aspect of the present invention, the host device transmits a request for acquiring the IP address list when the first communication is performed, and the power conversion system obtains the IP address list from the host device. Further having a receiving unit for receiving the request, the list transmitting unit transmits the IP address list to the higher-level device when the acquisition request is received from the higher-level device.

Further, in the power conversion system according to one aspect of the present invention, the higher-level device periodically transmits an acquisition request for the IP address list, and the power conversion system receives the acquisition request from the higher-level device. Further, the list transmission unit transmits the IP address list to the higher-level device when the acquisition request is received from the higher-level device.

Further, in the power conversion system according to one aspect of the present invention, the IP address list is stored in a predetermined register, and the power conversion system has a receiving unit for receiving a reference request for the register from the host device. Further, the list transmission unit transmits the IP address list to the higher-level device when the reference request is received from the higher-level device.

Further, in the power conversion system according to one aspect of the present invention, the register is secured in a storage area different from the list storage unit, and the power conversion system uses the IP address list of the list storage unit as the register. It also has a copy unit to copy to.

Further, in the power conversion system according to one aspect of the present invention, when the copy unit receives the reference request from the higher-level device, the copy unit transmits the IP address list to the higher-level device of the list transmission unit. Prior to that, the IP address list is copied to the predetermined register.

Further, in the power conversion system according to one aspect of the present invention, each of the plurality of power conversion devices is an identification information transmission unit that transmits its own identification information to the higher-level device after the IP address list is transmitted. Has.

Further, the power conversion system according to one aspect of the present invention assigns an identification number to each of the plurality of power conversion devices and an identification number assigned to each of the plurality of power conversion devices. Further, it has a display control unit that sorts in ascending order or descending order and displays the operating status of each of the plurality of power conversion devices.

Further, the power conversion system according to one aspect of the present invention further has an allocation unit that dynamically assigns an IP address to the higher-level device, and each of the plurality of power conversion devices is assigned by the allocation unit. Communicates with the host device based on the IP address of the host device.

According to the present invention, for example, a plurality of power conversion devices belonging to the same group and connected to each other so as to be communicable with each other and a higher-level device linked with the plurality of power conversion devices can communicate with each other.

It is a figure which shows the whole structure of the power conversion system which concerns on embodiment. It is a functional block diagram which shows the function realized by a power conversion system. It is a figure which shows the data storage example of a reference list. It is a figure which shows an example of a group setting screen. It is a figure which shows an example of the identification number assignment screen. It is a flow diagram which shows the process executed in a power conversion system. It is a flow diagram which shows the process executed in a power conversion system. It is a figure which shows an example of the connection form of a power conversion apparatus.

[1. Overall configuration of power conversion system]
From the point of view of the inventor of the present invention, when the operating status of each of the plurality of power conversion devices is monitored by the higher-level device, there is no mechanism for notifying the higher-level device of the IP address of each power conversion device, and the higher-level device and the higher-level device. It was not possible to communicate with each power converter. Therefore, as a result of diligent research and development to enable communication between these plurality of power conversion devices and higher-level devices, the inventor of the present invention has come up with a new and original power conversion system and the like. Hereinafter, the power conversion system and the like according to the present embodiment will be described in detail.

FIG. 1 is a diagram showing an overall configuration of a power conversion system according to an embodiment. As shown in FIG. 1, the power conversion system 1 includes power conversion devices 10-1 to 10-N and a user terminal 20, and is connected to a higher-level device 30. In the present embodiment, when it is not necessary to distinguish the power conversion devices 10-1 to 10-N, the power conversion device 10 is simply referred to as the power conversion device 10. Further, N indicates the number of connected power conversion devices 10, and is an arbitrary integer of 2 or more.

The power conversion device 10 is a device that converts electric power, and is, for example, an inverter, a converter, or a power conditioner. For example, the power conversion device 10 includes a control unit 11, a storage unit 12, a communication unit 13, and a power conversion unit 14.

The control unit 11 includes at least one processor. The storage unit 12 includes a volatile memory such as RAM and a non-volatile memory such as ROM, EEPROM, flash memory, or a hard disk, and stores various programs and data. The control unit 11 executes various processes based on these programs and data. The communication unit 13 is a communication interface for wired communication or wireless communication. Any standard can be applied to the communication interface, for example, Ethernet (registered trademark) or WiFi (registered trademark) can be applied. The power conversion unit 14 is an electric circuit that adjusts a frequency and a voltage, and various methods such as a PWM method, a PFM method, or a PAM type can be applied as a modulation method.

The user terminal 20 is a computer operated by the user of the power conversion system 1. For example, the user terminal 20 is a personal computer, a mobile phone (including a smartphone), or a mobile terminal (including a tablet terminal). The user terminal 20 includes a control unit 21, a storage unit 22, a communication unit 23, an operation unit 24, and a display unit 25. The hardware configurations of the control unit 21, the storage unit 22, and the communication unit 23 may be the same as those of the control unit 11, the storage unit 12, and the communication unit 13. The operation unit 24 is an input device such as a mouse or a keyboard. The display unit 25 is a liquid crystal display, an organic EL display, or the like, and displays various screens according to the instructions of the control unit 11.

The programs and data described as being stored in the storage units 12 and 22 may be supplied to the power conversion device 10 or the user terminal 20 via the network. Further, the hardware configurations of the power conversion device 10 and the user terminal 20 are not limited to the above examples, and various hardware can be applied. For example, a reading unit for reading a computer-readable information storage medium (for example, an optical disk drive or a memory card slot) or an input / output unit for directly connecting to an external device (for example, a USB terminal) may be included. .. In this case, the program or data stored in the information storage medium may be supplied via the reading unit or the input / output unit.

The host device 30 is a computer that monitors the operating status of each power conversion device 10, and is, for example, a server computer or a personal computer. A user of the power conversion system 1 may use the higher-level device 30 for monitoring, but in the present embodiment, a manager different from the user of the power conversion system 1 may use the higher-level device 30 for monitoring. To explain. The hardware configuration of the host device 30 may be the same as that of the user terminal 20, and may include, for example, a control unit, a storage unit, a communication unit, an operation unit, and a display unit.

[2. Overview of power conversion system]
In the power conversion system 1, a plurality of power conversion devices 10 belong to the same group and are connected to each other so as to be communicable with each other.

A group is a group of power conversion devices 10 connected to the same network, and is also called a cluster. In other words, the group is a group of power conversion devices 10 that share information with each other, and is a group of power conversion devices 10 to be monitored by the host device 30. The power conversion devices 10 belonging to the same group can cooperate with each other, and for example, synchronize the AC voltage and make the output voltage uniform. The power conversion device 10 in the group may be divided into a master and a slave, and the master sends a synchronization instruction, an output voltage adjustment instruction, and the like to the slave. The slave adjusts the frequency and output voltage based on the instructions from the master.

In the present embodiment, a part of the power conversion device 10 in the group is directly connected to the host device 30, and the other power conversion device 10 is indirectly connected to the host device 30. The number of power conversion devices 10 directly connected to the host device 30 may be one or a plurality of. However, in the present embodiment, it is assumed that at least one power conversion device 10 is indirectly connected to the higher-level device 30 instead of all the power conversion devices 10 being directly connected to the host device 30.

Directly connected means that there is no other power conversion device 10 in the same group on the communication path to the host device 30. For example, the power conversion device 10 and the host device 30 are connected by one communication cable, or the power conversion device 10 and the host device 30 are connected via a communication device such as a hub, and the same group is connected between them. The absence of another power converter 10 corresponds to being directly connected. The directly connected power conversion device 10 acts as a gateway because it mediates the communication of the indirectly connected power conversion device 10.

Indirectly connected means that another power conversion device 10 of the same group exists on the communication path to the host device 30. For example, connecting the power conversion device 10 to the host device 30 via another power conversion device 10 in the same group corresponds to being indirectly connected.

The connection form of the power conversion device 10 may be any form, and in the present embodiment, a daisy chain connection is given as an example, but a star connection may be used as in the modified example described later. In the daisy chain connection, the power conversion devices 10 are connected in series in a predetermined connection order.

The connection order may be determined by any method, and may be, for example, the order when counting from the host device 30. The closer it is to the upper device 30, the higher it may be, and the farther it is from the upper device 30, the lower it may be. For example, the power conversion device 10 directly connected to the host device 30 may be at the top, and the terminal power conversion device 10 may be at the bottom. In the connection example of FIG. 1, the power conversion device 10-1 may be the highest level, and the power conversion device 10-N may be the lowest level. The connection order is not limited to being higher as it is closer to the higher device 30, and the connection order may be determined regardless of the proximity to the higher device 30.

For example, the communication unit 13 of the power conversion device 10 has an upper communication port for communicating with the device on the upper side and a lower communication port for communicating with the device on the lower side. In the connection example of FIG. 1, the upper communication port of the power conversion device 10-1 is connected to the upper device 30 by a communication cable. Since the other power conversion devices 10-2 to 10-N do not exist on the communication path to the host device 30, the power conversion device 10-1 is directly connected to the host device 30. Therefore, the power conversion device 10-1 serves as a gateway that mediates the communication of the other power conversion devices 10-2 to 10-N.

Further, for example, the lower communication port of the power conversion device 10-1 is connected to the upper communication port of the power conversion device 10-2 by a communication cable. Since the power conversion device 10-1 exists on the communication path to the host device 30, the power conversion device 10-2 is indirectly connected to the host device 30. After that, in the same manner, the terminal power conversion devices 10-N are connected in order by a communication cable, and are indirectly connected to the host device 30.

The host device 30 acquires an operating status from each power conversion device 10 connected as described above, and monitors the operating status. In this respect, the host device 30 can obtain the IP address of the directly connected power conversion device 10-1 by transmitting a DHCP request or the like, but the indirectly connected power conversion device 10 For -2 to 10-N, the IP address cannot be obtained by the same method.

Therefore, the power conversion system 1 stores the list of IP addresses of all the power conversion devices 10 in the group in the power conversion device 10-1, and causes the higher-level device 30 to transmit the list in the group. The IP addresses of all the power conversion devices 10 of the above are grasped by the host device 30, so that each power conversion device 10 and the host device 30 can communicate with each other. Hereinafter, the details of the power conversion system 1 will be described.

[3. Functions realized by the power converter system]
FIG. 2 is a functional block diagram showing a function realized by the power conversion system 1. As shown in FIG. 2, here, the functions realized by each of the power conversion device 10 and the user terminal 20 will be described.

[3-1. Functions realized in power converters]
In the power conversion device 10, a list storage unit 100, a list generation unit 102, a reception unit 103, a copy unit 104, a list transmission unit 105, an identification information transmission unit 106, and an allocation unit 107 are realized, which is different from the list storage unit 100. The register 101 is reserved in the storage area.

In this embodiment, the case where the power conversion device 10 in the group has the same function will be described, but the function of the power conversion device 10 may be different. For example, the power conversion device 10-1 directly connected to the host device 30 has all the functions shown in FIG. 2, and the power conversion devices 10-2 to 10-N indirectly connected to the host device 30. Has different functions depending on the power conversion device 10, such as having only a part of the functions shown in FIG. 2 (for example, the list storage unit 100, the list generation unit 102, and the identification information transmission unit 106). good.

[List storage]
The list storage unit 100 is mainly realized by the storage unit 12. The list storage unit 100 stores data necessary for communicating each power conversion device 10 with the host device 30. For example, the list storage unit 100 stores a reference list L in which information about each power conversion device 10 in the group is stored.

FIG. 3 is a diagram showing an example of storing data in the reference list L. The reference list L is a list generated by a user operation from the group setting screen (FIG. 4) described later, and for sharing information of each power conversion device 10 in the group. As shown in FIG. 3, for example, the reference list L includes an identification number list, a serial number list, and an IP address list, and stores a combination of the identification number, the serial number, and the IP address of each power conversion device 10. There is.

The identification number of each power conversion device 10 is stored in the identification number list. The identification number is the name of the power conversion device 10 assigned by the granting unit 201 described later. The identification number is set so as not to overlap with other power conversion devices 10 in the group, and is information that can uniquely identify the power conversion device 10 in the group. The identification number may include characters as well as numerical values. Further, the identification number may be changed by the user's operation after being assigned to the power conversion device 10. Further, in the present embodiment, it is assumed that the identification number is not set at the time of shipment of the power conversion device 10, but the identification number may be set at the time of shipment.

The serial number of each power conversion device 10 is stored in the serial number list. The serial number is an individual identification number of the power conversion device 10, and is, for example, already assigned at the time of shipment of the power conversion device 10. The serial number is set so as not to overlap with other power conversion devices 10 manufactured by the manufacturer, and is uniquely identifiable information among all the power conversion devices 10 manufactured by the manufacturer. The serial number is not changed in principle after being assigned to the power conversion device 10.

The IP address of each power conversion device 10 is stored in the IP address list. In the present embodiment, it is assumed that the IP address is already assigned at the time of shipment of the power conversion device 10, but the IP address may be set after the power conversion device 10 arrives at the user's hand. For example, the IP address may be manually set by the user from the user terminal 20, or is dynamically assigned by a device having a DHCP function (for example, a DHCP server, another power conversion device 10, or a user terminal 20). You may.

The information stored in the reference list L is not limited to the above example. Arbitrary information may be stored in the reference list L, and for example, information such as the status, MAC address, or group name of each power conversion device 10 may be stored. Further, in FIG. 3, the contents of the reference list L are shown in a table format, but any data format such as a text format or a CSV format can be applied to the reference list L.

Further, the IP address list may not be stored in the reference list L, and the list storage unit 100 may store the IP address list separately from the reference list L. Similarly, the identification number list and the serial number list may not be stored in the reference list L, and may be stored separately from the reference list L.

[List generator]
The list generation unit 102 is mainly realized by the control unit 11. The list generation unit 102 acquires the IP addresses of each of the plurality of power conversion devices 10 and generates an IP address list. Each power conversion device 10 stores its own IP address, and by notifying each other of the IP address using a communication protocol such as TCP / IP, the IP address is shared within the group. The list generation unit 102 generates an IP address list including the IP address of each of the shared power conversion devices 10.

In this embodiment, the identification number and the serial number are shared together with the IP address. For example, the list generation unit 102 generates an identification number list including the identification number of each of the shared power conversion devices 10 and a serial number list including the serial number of each of the shared power conversion devices 10. In the present embodiment, since each list is included in the reference list L, the list generation unit 102 will generate the reference list L including the identification number list, the serial number list, and the IP address list.

The IP address or the like may be shared at any time. For example, the IP address or the like may be shared when connecting to the network (when connecting the communication cable), or the IP may be shared when the power is turned on. The address and the like may be shared. In addition, for example, when the user performs an operation to share the IP address or the like from the user terminal 20, the IP address or the like may be shared, or the IP address or the like may be shared periodically.

[Receiver]
The receiving unit 103 mainly realizes the control unit 11. In the present embodiment, the case where the IP address list is transmitted in response to the IP address list acquisition request from the host device 30 will be described. However, as in the modification described later, the power conversion device 10 voluntarily IPs. The address list may be transmitted to the host device 30.

The IP address list acquisition request is information in a predetermined format including an identifier indicating that an IP address is acquired. The host device 30 may transmit an IP address list acquisition request at an arbitrary timing. For example, the IP address list acquisition request may be transmitted when a predetermined operation is performed, or the first communication may be performed. When this is done, an IP address list acquisition request may be sent, or an IP address list acquisition request may be sent periodically.

The predetermined operation may be any predetermined operation, and is performed by selecting a button, an icon, or the like on the screen displayed on the host device 30. For example, selecting a button, an icon, or the like for adding or changing the power conversion device 10 on the screen for adding or changing the power conversion device 10 corresponds to a predetermined operation. Further, for example, selecting a predetermined button, icon, or the like on the screen for initial setting necessary for the operation of the host device 30 corresponds to a predetermined operation. Further, for example, selecting a button, an icon, or the like for newly acquiring or updating an IP address list on a screen for newly acquiring or updating an IP address list corresponds to a predetermined operation.

The first communication is when communication is established between the power conversion device 10 and the host device 30. In the first communication, the communication is established according to the procedure defined by the communication protocol. The first communication may be executed at an arbitrary timing, for example, when the power is turned on, when the communication function is activated, when the communication cable is plugged in, or when a predetermined time arrives, the first communication is performed. Communication takes place. In the present embodiment, since the IP address of the host device 30 is assigned by the allocation unit 107 described later, the time when the IP address is assigned corresponds to the first communication.

Periodic has the same meaning as periodic, and means that an IP address transmission request is transmitted at regular time intervals. When the IP address list acquisition request is sent periodically, the transmission interval may be any length, for example, a few minutes to a few hours, or a few days to a few months. It may be a unit. For example, the host device 30 executes a timekeeping process using a real-time clock or the like, and determines whether or not it is time to transmit an IP address list acquisition request. When it is determined that the timing has arrived, the host device 30 transmits a request for acquiring an IP address list.

In the present embodiment, the IP address list stored in the list storage unit 100 is copied to the register 101 by the copy unit 104 described later, so that the reference request of the register 101 corresponds to the acquisition request of the IP address list.

The reference request of the register 101 is information in a predetermined format including an identifier indicating that the register 101 is referred to, and includes the address of the register 101 to be referenced. The host device 30 knows in advance the address of the register 101 in which the IP address list is stored, and transmits a reference request for the register 101 based on the address. The receiving unit 103 receives the reference request of the register 101 from the host device 30.

[Copy section]
The copy unit 104 mainly realizes the control unit 11. In the present embodiment, the register 101 is secured in a storage area different from the list storage unit 100, and the copy unit 104 copies the IP address list of the list storage unit 100 to the register 101.

The different storage areas are that the memory itself is different, or that the address band in the memory is different. In the present embodiment, the list storage unit 100 is secured in the non-volatile memory of the storage unit 12, and the register 101 is reserved in the volatile memory of the storage unit 12, and is secured in different memories. And. The copy unit 104 copies the IP address list recorded in the list storage unit 100 in the non-volatile memory to the register 101 in the volatile memory.

Allocation is the allocation of available addresses in memory. The address of the register 101 may be a predetermined address, and for example, an address band capable of storing the IP addresses of the maximum number of connectable power conversion devices 10 (for example, about 50 to 100) is assigned. .. When copying the IP address list to the register 101, it is not necessary to use the entire area of the register 101, and a free area may be generated. At that time, the copy unit 104 copies the IP address list by packing, for example, from the youngest address.

In the present embodiment, since the reference request of the register 101 corresponds to the acquisition request of the IP address list, the copy unit 104 is the higher-level device of the list transmission unit 105 when the reference request of the register 101 is received from the higher-level device 30. Prior to transmitting the IP address list to 30, the IP address list is copied to a predetermined register 101.

Prior to transmission of the IP address list is before transmission of the IP address. The IP address list stored in the list storage unit 100 is not transmitted as it is, but is once copied to the register 101, and then the IP address list in the register 101 is transmitted.

In this embodiment, a shell to be executed when a reference request for register 101 is received is prepared. The shell describes a procedure for copying the IP address list to the register 101 and a procedure for transmitting the IP address list copied to the register 101. The copy unit 104 corresponds to the former of these two procedures, and the latter corresponds to the list transmission unit 105 described later. The shell is executed in response to receiving the reference request of the register 101, and the copy unit 104 copies the IP address list of the list storage unit 100 to the register 101.

The timing at which the IP address list is copied is not limited to the above example. The IP address list may be copied at an arbitrary timing, and may be copied in advance before the reference request of the register 101 is received. For example, the copy unit 104 may copy the IP address list when the allocation unit 107, which will be described later, assigns an IP address to the higher-level device 30, or copies the IP address list when the power conversion device 10 is turned on. You may. Further, for example, the copy unit 104 may periodically copy the IP address list.

[List transmitter]
The list transmission unit 105 is mainly realized by the control unit 11. The list transmission unit 105 transmits the IP address list to the host device 30 that cooperates with the plurality of power conversion devices 10. The list transmission unit 105 needs to specify the IP address of the higher-level device 30 when transmitting the IP address list, but in the present embodiment, the IP address of the higher-level device 30 is dynamically assigned by the allocation unit 107 described later. Therefore, the list transmission unit 105 transmits the IP address list based on the IP address of the higher-level device 30 assigned by the allocation unit 107.

If the IP address of the host device 30 is not dynamically assigned but is a static IP address, the IP addresses of each other are exchanged according to the procedure defined by the communication protocol at the time of initial communication or the like. It shall be. In this case, the list transmission unit 105 transmits the IP address list based on the IP address of the host device 30 acquired at the time of exchange.

In the present embodiment, any one of the plurality of power conversion devices 10 is directly connected to the host device 30, and at least the power converter 10-1 directly connected to the host device 30 is a list transmission unit. It has 105 and transmits an IP address list to the host device 30. In the connection example of FIG. 1, since the uppermost power conversion device 10-1 is directly connected to the higher-level device 30, at least the power conversion device 10-1 has a list transmission unit 105. In the present embodiment, the other power conversion devices 10-2 to 10-N indirectly connected to the host device 30 also have the list transmission unit 105, and which device is replaced due to device replacement or the like. The IP address list can be transmitted even if it is directly connected to the host device 30, but these other power conversion devices 10-2 to 10-N do not have to have the list transmission unit 105 in particular. ..

For example, the list transmission unit 105 transmits an IP address list to the host device 30 when a request for acquiring an IP address list is received from the host device 30. The list transmission unit 105 transmits an IP address list to the higher-level device 30 in response to receiving an acquisition request from the higher-level device 30 (that is, as a response to the acquisition request).

In the present embodiment, since the reference request of the register 101 corresponds to the acquisition request, the list transmission unit 105 transmits the IP address list to the higher-level device 30 when the reference request of the register 101 is received from the higher-level device 30. Will be done. The list transmission unit 105 transmits the IP address list to the higher-level device 30 in response to receiving the reference request of the register 101 from the higher-level device 30 (that is, as a response to the reference request). For example, the shell is executed in response to receiving the reference request of the register 101, and the list transmission unit 105 transmits the IP address list copied to the register 101.

In the present embodiment, the list transmission unit 105 transmits an IP address list to the host device 30 when the host device 30 communicates for the first time. As described above, at the time of the first communication, the communication is established according to the procedure defined by the communication protocol, and this procedure includes a procedure in which the host device 30 makes a reference request to the register 101. The host device 30 transmits a reference request to the register 101 at the time of the first communication according to the procedure defined by the communication protocol. The list transmission unit 105 transmits the IP address list to the host device 30 when the reference request of the register 101 is received at the time of the first communication.

The timing at which the IP address list is transmitted is not limited to the above example. The IP address list may be transmitted at an arbitrary timing, and for example, the IP address list may be transmitted in response to a reference request of the register 101 transmitted when a predetermined operation is performed in the host device 30. , The IP address list may be transmitted in response to the reference request of the register 101 which is periodically transmitted from the host device 30.

[Identification information transmitter]
The identification information transmission unit 106 is mainly realized by the control unit 11. The identification information transmission unit 106 transmits its own identification information to the host device 30 after the IP address list is transmitted.

The identification information may be any information that can identify the power conversion device 10, and is, for example, an identification number or a serial number. In the present embodiment, the case where both the identification number and the serial number are included in the identification information will be described, but only one of the identification number and the serial number may be included in the identification information, and other information may be included. It may be included in the identification information. Since the identification number and the serial number are stored in the reference list L, the identification information transmission unit 106 stores its own identification number stored in the identification number list of the reference list L and the serial number list of the reference list L. Obtains the identification information including its own serial number.

In the present embodiment, when the identification information transmission unit 106 receives the identification information acquisition request from the higher-level device 30, the identification information transmission unit 106 transmits its own identification information to the higher-level device 30. The identification information transmission unit 106 transmits its own identification information to the higher-level device 30 in response to receiving the acquisition request from the higher-level device 30 (that is, as a response to the acquisition request).

The identification information acquisition request is information in a predetermined format including an identifier indicating that the identification information is acquired. The host device 30 may transmit the identification information acquisition request at an arbitrary timing, for example, the identification information acquisition request may be transmitted when a predetermined operation is performed, and the first communication is performed. In some cases, a request for acquisition of identification information may be sent, or a request for acquisition of identification information may be sent periodically. For example, the host device 30 transmits an identification information acquisition request to each power conversion device 10 after acquiring the IP address list.

As with the IP address list, the identification information may be copied to a register and then transmitted. It is assumed that the register to which the identification information is copied has an address different from the register 101 to which the IP address list is copied, and the host device 30 knows the address. In this case, the request for acquiring the identification information is a reference request for the register to which the identification information is copied, and includes the address of the register. When the identification information transmission unit 106 receives the identification information acquisition request from the host device 30, the identification information transmission unit 106 copies the identification information to the register and transmits the identification information. In this case as well, the identification information may be copied and transmitted by executing the shell as in the case of the IP address list.

Further, the timing at which the identification information is transmitted is not limited to the above example. Similar to the IP address list, the identification information may be transmitted at an arbitrary timing. For example, the identification information transmission unit 106 may periodically transmit the identification information to the host device 30, and the user may send the identification information to the user terminal. When a predetermined operation is performed from 20, the identification information may be transmitted to the host device 30. Further, for example, the list transmission unit 105 may transmit the IP address list to the host device 30 when the reference list L is updated. Further, for example, the list transmission unit 105 is an operation in which the power conversion device 10 is added or replaced from the group setting screen (FIG. 4) described later (that is, the user adds or replaces the power conversion device 10 from the user terminal 20). When the above is performed), the identification information may be transmitted to the host device 30.

[Assignment]
The allocation unit 107 is mainly realized by the control unit 11. The allocation unit 107 dynamically allocates an IP address to the host device 30. In the present embodiment, the host device 30 is a DHCP client, and the power conversion device 10 is a DHCP server. As the IP address allocation method itself, the method used in DHCP may be used.

When the allocation unit 107 receives an IP address allocation request from the host device 30, it uses the DHCP function to assign an IP address to the host device 30. The allocation request is a DHCP request. The power conversion device 10 holds a list of IP addresses that can be assigned, and the allocation unit 107 refers to the list and allocates a vacant IP address to the higher-level device 30. Each of the plurality of power conversion devices 10 communicates with the host device 30 based on the IP address of the host device 30 assigned by the allocation unit 107.

[3-2. Functions realized on user terminals]
In the user terminal 20, the display control unit 200 and the grant unit 201 are realized.

[Display control unit]
The display control unit 200 is mainly realized by the control unit 21. The display control unit 200 causes the display unit 25 to display various screens for setting the power conversion device 10 and managing the operation status. Here, as an example of the screen displayed by the display control unit 200, a group setting screen and an identification number assigning screen will be described.

FIG. 4 is a diagram showing an example of a group setting screen. As shown in FIG. 4, the group setting screen G1 is a screen for setting the power conversion device 10 belonging to the group. For example, when the user terminal 20 and the power conversion device 10 are connected by wire or wirelessly, the display control unit 200 acquires the status, serial number, and IP address of the power conversion device 10 and displays them on the group setting screen G1. Let me. The status is information such as whether the power conversion device 10 has been added to the group or a new power conversion device 10 that does not belong to the group.

The example of FIG. 4 shows a screen at the time of initial setting of the power conversion device 10. Since the identification number of the power conversion device 10 is set after it reaches the user's hand, the identification number of the power conversion device 10 is not displayed on the group setting screen G1 of FIG. The group setting screen G1 can be displayed even after the initial setting, and if the identification number of the power conversion device 10 is assigned at that time, the identification number is displayed on the group setting screen G1.

Buttons B10 and B11 for adding the displayed power conversion device 10 to the group are displayed on the group setting screen G1. When the user selects the button B10, one power conversion device 10 corresponding to the button B10 is added to the group. When the user selects the button B11, all the power conversion devices 10 displayed on the group setting screen G1 are added to the group. When the power conversion device 10 is added to the group, information such as an IP address is shared and the reference list is updated.

The group setting screen G1 is not limited to the example of FIG. 4, and for example, a button or the like for excluding the power conversion device 10 from the group may be displayed. When the power conversion device 10 is replaced, it is excluded from the group and added to a new group.

FIG. 5 is a diagram showing an example of an identification number assigning screen. As shown in FIG. 5, the identification number assigning screen G2 is a screen for assigning an identification number to the power conversion device 10. The identification number assignment screen G2 may be displayed at the time of initial setting or may be displayed after the initial setting, as in the group setting screen G1.

An input form F20 for inputting an identification number is displayed on the identification number assigning screen G2. The number input by the user in the input form F20 is assigned as the identification number of the power conversion device 10. In the input form F20, an arbitrary number may be input from the operation unit 24, or a predetermined serial number may be displayed in a pull-down format. When it is displayed in the pull-down format, only the vacant numbers that are not assigned to any of the power conversion devices 10 may be displayed among the predetermined numbers.

Although the case where an identification number is assigned to one power conversion device 10 will be described with reference to FIG. 5, an identification number may be assigned to each of the plurality of power conversion devices 10. Further, the identification numbers may be assigned in the order of connection order in the daisy chain connection, or may be assigned without considering the connection order in particular. For example, the third identification number may be assigned to the highest power conversion device 10-1.

[Granting part]
The granting unit 201 is mainly realized by the control unit 21. The granting unit 201 assigns an identification number to each of the plurality of power conversion devices 10. For example, the granting unit 201 assigns the identification number input by the user from the operation unit 24 to the power conversion device 10. In the present embodiment, since the identification number is input from the input form F20 of the identification number assigning screen G2, the assigning unit 201 assigns the identification number input to the input form F20 to the power conversion device 10.

The identification number may be automatically assigned based on a predetermined algorithm instead of being manually assigned by the user. For example, the user terminal 20 holds a list of identification numbers, and the assigning unit 201 may automatically assign a vacant identification number to the power conversion device. For example, the assigning unit 201 may assign the identification number of each power conversion device 10 so that the identification number becomes a serial number, or may not be a serial number in particular.

When the identification number is assigned by the assigning unit 201, the display control unit 200 sorts the identification numbers assigned to each of the plurality of power conversion devices 10 in ascending or descending order, and each of the plurality of power conversion devices 10 is assigned. Display the operating status. For example, the display control unit 200 displays the operating status of each power conversion device 10 so that the identification numbers are arranged in ascending or descending order from the top to the bottom of the screen. Further, for example, the display control unit 200 displays the operating status of each power conversion device 10 so that the identification numbers are arranged in ascending or descending order from left to right (or right to left) on the screen. The operating status is information to be monitored, and may be, for example, information such as a voltage value or frequency output by the power conversion device 10, or may be the presence or absence of an abnormality detected by the power conversion device 10. good. The display control unit 200 may transmit an operation status acquisition request to each power conversion device 10 based on the IP address list, and acquire the operation status from each power conversion device 10.

[4. Processing performed by the power conversion system]
6 and 7 are flow charts showing the processes executed by the power conversion system 1. The processes shown in FIGS. 6 and 7 are executed by the control unit 11 operating according to the program stored in the storage unit 12 and the host device 30 operating according to the program stored in the power conversion device 10 in the power conversion device 10. .. The process shown in FIGS. 6 and 7 is an example of the process executed by the functional block shown in FIG. When the processes shown in FIGS. 6 and 7 are executed, each power conversion device 10 already belongs to the group and is assigned an identification number by the operation of the user on the group setting screen G1 and the identification number assignment screen G2. It is assumed that it has been done.

As shown in FIG. 6, information such as an IP address is shared between the power conversion devices 10, and a reference list L is generated (S1). In S1, each power conversion device 10 transmits its own identification number, serial number, and IP address stored in the storage unit 12 to the other power conversion device 10, and the other power conversion device 10 transmits the identification number, the serial number, and the IP address. The identification number, serial number, and IP address of the other power conversion device 10 are received. Each power conversion device 10 generates a reference list L including its own identification number, serial number, and IP address, and the identification number, serial number, and IP address of another power conversion device 10, and stores the storage unit 12. Record to.

The host device 30 transmits a DHCP request to the power conversion device 10-1 directly connected to itself (S2). The processes after S2 are processes executed at the time of initial communication, and the procedure of each process is defined in the communication protocol. The DHCP request may be transmitted at a predetermined timing such as when the power is turned on, when the communication function is activated, when the communication cable is inserted, or when the administrator operates.

Upon receiving the DHCP request in the power conversion device 10-1, the control unit 11 assigns an IP address to the host device 30 (S3). The list of IP addresses that can be assigned to the host device 30 is stored in the storage unit 12 in advance, and in S3, the control unit 11 allocates an IP address that has not yet been assigned in the list, and the IP address. To be used. After the IP address is assigned, a handshake may be performed between the power conversion device 10-1 and the host device 30 according to the procedure defined in the communication protocol. Further, it is assumed that the IP address of the power conversion device 10-1 is notified to the host device 30 at the time of assigning the IP address.

When the IP address is assigned, the host device 30 transmits a reference request to the register 101 in which the IP address list is stored to the power conversion device 10-1 (S4). In S4, the host device 30 includes the address of the register 101 to be referenced in the reference request and transmits the address.

Upon receiving the reference request of the register 101 in the power conversion device 10-1, the control unit 11 executes the shell and copies the IP address list stored in the reference list L to the register 101 (S5). In S5, the control unit 11 copies the IP address list stored in the non-volatile memory of the storage unit 12 to the register 101 reserved in the volatile memory of the storage unit 12.

The control unit 11 transmits the IP address list copied to the register 101 to the host device 30 (S6). When the host device 30 receives the IP address list transmitted in S6, it records it in its own storage unit. As a result, the host device 30 is in a state where it can grasp and communicate with the IP addresses of all the power conversion devices 10 in the group. However, since the host device 30 has not acquired the identification information of each power conversion device 10, the identification information is acquired from each power conversion device 10 by the subsequent processing and associated with the IP address. As a result, even if the IP addresses are irregularly arranged in the register 101, the IP address of each power conversion device 10 and the identification information can be associated with each other.

The host device 30 transmits a request for acquiring identification information to the power conversion device 10-1 (S7). When the identification information is copied to the register 101 of the power conversion device 10-1 and then transmitted, in S8, the host device 30 includes the address of the register to be referred to in the reference request and transmits the transmission. You may.

Upon receiving the identification information acquisition request in the power conversion device 10-1, the control unit 11 transmits its own identification information (S8). When the identification information is copied to the register of the power converter 10-1 and then transmitted, the control unit 11 executes the shell and uses its own identification number stored in the non-volatile memory of the storage unit 12. The identification information including the serial number is copied to a register secured in the volatile memory of the storage unit 12 and transmitted. When the host device 30 receives the identification information of the power conversion device 10-1 transmitted in S8, the host device 30 associates it with the IP address of the power conversion device 10-1 and records it in its own storage unit.

Moving on to FIG. 7, the host device 30 transmits a request for acquiring identification information to the power conversion device 10-2 (S9). In S9, the host device 30 identifies the IP address of the power conversion device 10-2 based on the IP address list, and transmits a request for acquiring identification information. Upon receiving the identification information acquisition request, the power conversion device 10-1 directly connected to the host device 30 transfers the power conversion device 10-2 to the power conversion device 10-2.

Upon receiving the request for acquisition of the identification information in the power conversion device 10-2, the control unit 11 transmits its own identification information (S10). The processing of S10 is the same as that of S8. When the power conversion device 10-1 receives the identification information of the power conversion device 10-2, the power conversion device 10-1 transfers the identification information to the host device 30. When the host device 30 receives the identified information of the transferred power conversion device 10-2, it associates it with the IP address of the power conversion device 10-2 and records it in its own storage unit.

In the same manner thereafter, the host device 30 transmits a request for acquiring the identification information and receives the identification information up to the terminal power conversion device 10-N (S11, S12). By the above processing, the host device 30 can acquire the identification information of all the power conversion devices 10 in the group and associate it with the IP address.

When the identification information of each power conversion device 10 is transmitted to the higher-level device 30, the higher-level device 30 transmits a request for acquisition of the operating status to the power conversion device 10-1 (S13). The operation status acquisition request is information in a predetermined format including an identifier indicating that the operation status is requested. When the operating status is stored in the register in the power conversion device 10, the address of the register is stored in the operation status acquisition request.

Upon receiving the operation status acquisition request in the power conversion device 10-1, the control unit 11 acquires and transmits the operation status of the power conversion unit 14 (S14). When the operating status of the power conversion unit 14 is stored in a register, the control unit 11 transmits the operating status stored in the register. When the host device 30 receives the operating status of the power conversion device 10-1 transmitted in S14, the host device 30 records it in its own storage unit.

The host device 30 transmits an operation status acquisition request to the power conversion device 10-2 (S15). In S15, the host device 30 identifies the IP address of the power conversion device 10-2 based on the IP address list, and transmits a request for acquiring the operating status. When the power conversion device 10-1 directly connected to the host device 30 receives the operation status acquisition request, the power conversion device 10-1 transfers the power conversion device 10-2 to the power conversion device 10-2.

Upon receiving the operation status acquisition request in the power conversion device 10-2, the control unit 11 acquires and transmits the operation status of the power conversion unit 14 (S16). The processing of S16 is the same as that of S14. When the power conversion device 10-1 directly connected to the power conversion device 10-2 receives the operating status of the power conversion device 10-2, it transfers the power conversion device 10-2 to the host device 30. When the host device 30 receives the operating status of the transferred power conversion device 10-2, it records it in its own storage unit.

In the same manner thereafter, the host device 30 transmits a request for acquiring the operating status and receives the operating status up to the terminal power conversion device 10-N (S17, S18). By the above processing, the host device 30 can acquire the operating status of all the power conversion devices 10 in the group and monitor the operating status.

According to the power conversion system 1 described above, the IP addresses of the plurality of power conversion devices 10 belonging to the same group and connected to each other so as to be communicable with each other are acquired to generate an IP address list, and a plurality of power conversion devices 10 are generated. By transmitting an IP address list to the higher-level device 30 that cooperates with the power conversion device 10 and causing the higher-level device 30 to grasp the IP address of each of the plurality of power conversion devices 10, the plurality of power conversion devices 10 and the higher-level device 30 Can be made communicable.

Further, at least, even if the power conversion device 10 directly connected to the host device 30 transmits an IP address list to the host device 30, the host device 30 does not know the IP address at all. The IP address of each power conversion device 10 in the group can be grasped by the host device 30.

Further, when the acquisition request transmitted in response to a predetermined operation in the host device 30 is received, the power conversion device 10 transmits the IP address list so that the administrator can acquire the IP address list at a desired timing. Can be done. For example, if a new power conversion device 10 is added to the group or a power conversion device 10 belonging to the group is replaced, a predetermined operation is performed, and the latest IP address list is added to the upper device 30. Since it is acquired, it is possible to make communication between the new power conversion device 10 or the replaced power conversion device 10 and the host device 30.

Further, by transmitting the IP address list when the first communication with the host device 30 is performed, the IP address list can be acquired when the communication is established, and the subsequent communication can be reliably executed. For example, even if a new power conversion device 10 is added to the group or the power conversion device 10 belonging to the group is replaced while the communication with the host device 30 is disconnected, the power conversion device 10 belonging to the group is replaced at the time of the first communication thereafter. Since the latest IP address list is acquired by the higher-level device 30, it is possible to enable communication between the new power conversion device 10 or the replaced power conversion device 10 and the higher-level device 30.

Further, by periodically transmitting the IP address list to the host device 30, the host device 30 can periodically acquire the latest IP address list. For example, even if a new power conversion device 10 is added to the group or the power conversion device 10 belonging to the group is replaced, the latest IP address list is periodically acquired by the higher-level device 30, so that new power is used. The conversion device 10 or the exchanged power conversion device 10 and the host device 30 can be made communicable.

Further, the IP address list is stored in a predetermined register 101, and when a reference request for the register 101 is received, the IP address list is transmitted to the host device 30 to obtain a specific register 101. Since the IP address list is transmitted as a response to the reference request, the configuration for transmitting the IP address list can be simplified.

Further, by separating the list storage unit 100 and the storage area for storing the IP address list, the IP address sharing operation and the IP address transmission operation to the higher-level device 30 can be performed independently, and the IP address transmission algorithm can be simplified. ..

Further, by copying the IP address list to the register 101 just before transmission, even if the register 101 is in the volatile memory area, it is possible to prevent the IP address list from being lost when the system is turned on and off.

Further, each of the plurality of power conversion devices 10 transmits its own identification information (for example, an identification number, a serial number, etc.) to the host device 30 after the IP address list is transmitted, so that the plurality of power conversion devices 10 have a plurality of power conversion devices. The identification information of each of the 10 can be grasped by the higher-level device 30, and can be used for monitoring the power conversion device 10 on the higher-level device 30 side.

Further, by assigning an identification number to each of the plurality of power conversion devices 10 and sorting them in ascending or descending order and displaying the operating status of each of the plurality of power conversion devices 10, each information can be displayed in an easy-to-read manner. be able to.

By dynamically assigning an IP address to the host device 30, it is possible to easily communicate with the plurality of power conversion devices 10 and the host device 30. Further, even if the higher-level device 30 does not know the IP address of any power conversion device 10, the higher-level device 30 is directly connected to the power conversion device 10 by the DHCP function (in the connection example of FIG. 1). If there is, the IP address of the power conversion device 10-1) can be known, and the IP address of another power conversion device 10 can be known from the power conversion device 10.

[5. Modification example]
The present invention is not limited to the embodiments described above. It can be changed as appropriate without departing from the spirit of the present invention.

For example, as described in the embodiment, the connection form of the power conversion device 10 is not limited to the daisy chain connection, and any connection form can be applied.

FIG. 8 is a diagram showing an example of a connection form of the power conversion device 10. As shown in FIG. 8, the power conversion system 1 includes switching hubs SW-1 to SW-M (M is a natural number), and each power conversion device 10 may be connected in a star shape. In the example of FIG. 8, the user terminal 20 is omitted. In the example of FIG. 8, the power conversion device 10-1 is directly connected to the upper device 30, and the lower communication port of the power conversion device 10-1 is connected to the switching hub SW-1 by a communication cable. Has been done.

Power conversion devices 10-2 and 10-3 are connected to the switching hub SW-1 communication port. The power conversion devices 10-2 and 10-3 are in a parallel relationship with each other, and are indirectly connected to the host device 30 via the power conversion device 10-1. Further, the switching hub SW-1 is connected to another switching hub, and a lower power conversion device 10 is connected to the switching hub SW-1. For example, the lowest power conversion device 10-N is connected to the switching hub SW-M, and is indirectly connected to the upper device 30 via the power conversion device 10-1.

In the case of the connection form as shown in FIG. 8, as in the embodiment, each power conversion device 10 stores the reference list L, and the IP address list is transmitted to the host device 30. For example, when the power conversion device 10-1 receives a reference request for the register 101 from the host device 30, it copies the IP address list to its own register 101 and transmits it. The details of this series of processes are as described in the embodiment. As described above, even if it is a star connection, the host device 30 is an IP including the IP addresses of other power conversion devices 10-2 to 10-N under the power conversion device 10-1 via the power conversion device 10-1. You can get the address list.

Further, for example, the power conversion device 10 may voluntarily transmit the IP address list instead of transmitting the IP address list in response to the request from the host device 30. In this case, the power conversion device 10 may periodically transmit the IP address list, or may transmit the IP address list when the user terminal 20 performs a predetermined operation of the user. Further, for example, the power conversion device 10 may voluntarily transmit an IP address list as a part of the DHCP response at the time of the first communication. Further, for example, the power conversion device 10 may transmit the IP address list to the host device 30 when the IP address list is updated. Further, for example, the list transmission unit 105 may transmit the IP address list to the host device 30 when the power conversion device 10 is added or replaced from the group setting screen G1.

Further, for example, the request for acquiring the IP address list does not have to be the request for reference to the register 101. For example, the power conversion device 10 may transmit the IP address list without copying it to the register 101. In this case, the IP address list acquisition request requests the IP address list instead of the reference request of the register 101. It suffices to include an identifier indicating that the operation is to be performed. Further, for example, although the register 101 is assumed to be outside the list storage unit 100, the register 101 may be inside the list storage unit 100. Further, for example, the register 101 may be reserved in the external memory of the power conversion device 10 or may be reserved in the memory of another computer.

Further, for example, the name of each power conversion device 10 may be given independently on the host device 30 side. In this case, the administrator of the host device 30 inputs the name of each power conversion device 10 from the operation unit. The name of each input power conversion device 10 may be recorded in association with the serial number or IP address of the power conversion device 10. The host device 30 records the identification number (name given by the user on the power conversion system 1 side) acquired from each power conversion device 10 and the name given by its own administrator in association with each other. The name may be associated.

In the above case, the administrator on the higher-level device 30 side can easily respond to the inquiry from the user. For example, even if the user makes an inquiry based on the identification number, which is the name given by the user, the administrator can immediately identify which power conversion device 10 is the inquiry. Further, when displaying the operating status of each power conversion device 10 on the host device 30, the operating status of each power conversion device 10 may be displayed after converting to the name given by the host device 30. .. At that time, it may be sorted and displayed based on the name given by the upper device 30 side, or it may be sorted by the name given by the power conversion system 1 side, and apparently the name given by the upper device 30 side. It may be displayed with.

Further, for example, each of the list storage unit 100, the register 101, the list generation unit 102, the reception unit 103, the copy unit 104, the list transmission unit 105, the identification information transmission unit 106, and the allocation unit 107 is a computer other than the power conversion device 10. It may be realized by. For example, a gateway server may be provided in the power conversion system 1, and each power conversion device 10 may communicate with the host device 30 via the gateway server. In this case, each of the above functions may be realized by the gateway server. In addition, for example, each of the above functions may be realized by another computer such as the user terminal 20.

Further, the embodiments described above are shown as specific examples, and the invention disclosed in the present specification is not limited to the configuration of these specific examples or the data storage example itself. Those skilled in the art may modify these disclosed embodiments in various ways, such as changing the shape and number of physical configurations, data structures, and execution order of processing. It should be understood that the technical scope of the invention disclosed herein also includes such modifications.

Claims (13)

Multiple power converters that belong to the same group and are connected to each other so that they can communicate with each other.
A list generation unit that acquires the IP address of each of the plurality of power conversion devices and generates an IP address list.
A list transmission unit that transmits the IP address list to a higher-level device that cooperates with the plurality of power conversion devices.
A display control unit that displays an identification number assigned to each of the plurality of power conversion devices and an operating status of each of the plurality of power conversion devices.
A list storage unit that stores a reference list including the identification number list of the identification number, the IP address list, and the like.
Have,
The display control unit displays a status indicating whether or not each of the plurality of power conversion devices belongs to a group, and when the status is changed by a user's instruction, the changed status is displayed. ,
A power conversion system further comprising an update unit that updates the reference list based on the changed status . Any of the plurality of power conversion devices is directly connected to the host device and is connected to the host device.
At least the power conversion device directly connected to the host device has the list transmitter and transmits the IP address list to the host device.
The power conversion system according to claim 1. The host device sends a request to acquire the IP address list when a predetermined operation is performed, and the host device sends a request to acquire the IP address list.
The power conversion system further includes a receiving unit that receives the acquisition request from the host device.
When the acquisition request is received from the higher-level device, the list transmission unit transmits the IP address list to the higher-level device.
The power conversion system according to claim 1 or 2. The host device sends a request to acquire the IP address list when the first communication is performed, and the host device sends a request to acquire the IP address list.
The power conversion system further includes a receiving unit that receives the acquisition request from the host device.
When the acquisition request is received from the higher-level device, the list transmission unit transmits the IP address list to the higher-level device.
The power conversion system according to any one of claims 1 to 3. The host device periodically sends a request to acquire the IP address list, and the host device periodically sends a request to acquire the IP address list.
The power conversion system further includes a receiving unit that receives the acquisition request from the host device.
When the acquisition request is received from the higher-level device, the list transmission unit transmits the IP address list to the higher-level device.
The power conversion system according to any one of claims 1 to 4. The IP address list is stored in a predetermined register.
The power conversion system further includes a receiving unit that receives a reference request for the register from the host device.
When the reference request is received from the higher-level device, the list transmission unit transmits the IP address list to the higher-level device.
The power conversion system according to any one of claims 1 to 5. The register is reserved in a storage area different from that of the list storage unit.
The power conversion system further includes a copy unit that copies the IP address list of the list storage unit to the register.
The power conversion system according to claim 6. When the reference request is received from the higher-level device, the copy unit sets the IP address list in the predetermined register prior to transmission of the IP address list to the higher-level device of the list transmission unit. Copy to,
The power conversion system according to claim 7. Each of the plurality of power conversion devices has an identification information transmission unit that transmits its own identification information to the higher-level device after the IP address list is transmitted.
The power conversion system according to any one of claims 1 to 8. The display control unit sorts the identification numbers assigned to each of the plurality of power conversion devices in ascending or descending order, and displays the operating status of each of the plurality of power conversion devices .
The power conversion system according to any one of claims 1 to 8. Further, it has an allocation unit that dynamically assigns an IP address to the higher-level device.
Each of the plurality of power conversion devices communicates with the higher-level device based on the IP address of the higher-level device assigned by the allocation unit.
The power conversion system according to any one of claims 1 to 10. Acquires the IP address of each of multiple power conversion devices that belong to the same group and are connected to each other so that they can communicate with each other, and generate an IP address list.
The IP address list is recorded in the storage unit, and the IP address list is recorded in the storage unit.
The IP address list is transmitted to a higher-level device that cooperates with the plurality of power conversion devices, and the IP address list is transmitted.
The identification number assigned to each of the plurality of power conversion devices and the operating status of each of the plurality of power conversion devices are displayed.
A reference list including the identification number list of the identification number and the IP address list is recorded in the list storage unit.
A status indicating whether or not each of the plurality of power converters belongs to a group is displayed.
When the status is changed by the user's instruction, the changed status is displayed.
Update the reference list based on the changed status,
IP address transmission method of the power converter. A list generator that acquires the IP address of each of a plurality of power conversion devices that belong to the same group and are connected to each other so as to be able to communicate with each other and generate an IP address list, and a higher level that cooperates with the plurality of power conversion devices. A computer included in a power conversion system having a list transmitter for transmitting the IP address list in the device.
A display control unit that displays an identification number assigned to each of the plurality of power conversion devices and the operating status of each of the plurality of power conversion devices.
It is a program to function as
The display control unit displays a status indicating whether or not each of the plurality of power conversion devices belongs to a group, and when the status is changed by a user's instruction, the changed status is displayed. ,
Based on the changed status, the reference list including the identification number list of the identification number and the IP address list is updated.
Program .

Images